FFmpeg
Data Structures | Functions | Variables
zerocodec.c File Reference
#include <zlib.h>
#include "avcodec.h"
#include "codec_internal.h"
#include "internal.h"
#include "zlib_wrapper.h"
#include "libavutil/common.h"

Go to the source code of this file.

Data Structures

struct  ZeroCodecContext
 

Functions

static int zerocodec_decode_frame (AVCodecContext *avctx, AVFrame *pic, int *got_frame, AVPacket *avpkt)
 
static av_cold int zerocodec_decode_close (AVCodecContext *avctx)
 
static av_cold int zerocodec_decode_init (AVCodecContext *avctx)
 
static void zerocodec_decode_flush (AVCodecContext *avctx)
 

Variables

const FFCodec ff_zerocodec_decoder
 

Function Documentation

◆ zerocodec_decode_frame()

static int zerocodec_decode_frame ( AVCodecContext avctx,
AVFrame pic,
int got_frame,
AVPacket avpkt 
)
static

ZeroCodec has very simple interframe compression. If a value is the same as the previous frame, set it to 0.

Definition at line 32 of file zerocodec.c.

◆ zerocodec_decode_close()

static av_cold int zerocodec_decode_close ( AVCodecContext avctx)
static

Definition at line 104 of file zerocodec.c.

◆ zerocodec_decode_init()

static av_cold int zerocodec_decode_init ( AVCodecContext avctx)
static

Definition at line 115 of file zerocodec.c.

◆ zerocodec_decode_flush()

static void zerocodec_decode_flush ( AVCodecContext avctx)
static

Definition at line 129 of file zerocodec.c.

Variable Documentation

◆ ff_zerocodec_decoder

const FFCodec ff_zerocodec_decoder
Initial value:
= {
.p.type = AVMEDIA_TYPE_VIDEO,
.p.name = "zerocodec",
.p.long_name = NULL_IF_CONFIG_SMALL("ZeroCodec Lossless Video"),
.priv_data_size = sizeof(ZeroCodecContext),
.p.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 136 of file zerocodec.c.

FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:41
zerocodec_decode_close
static av_cold int zerocodec_decode_close(AVCodecContext *avctx)
Definition: zerocodec.c:104
init
static int init
Definition: av_tx.c:47
zerocodec_decode_flush
static void zerocodec_decode_flush(AVCodecContext *avctx)
Definition: zerocodec.c:129
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:260
zerocodec_decode_frame
static int zerocodec_decode_frame(AVCodecContext *avctx, AVFrame *pic, int *got_frame, AVPacket *avpkt)
Definition: zerocodec.c:32
zerocodec_decode_init
static av_cold int zerocodec_decode_init(AVCodecContext *avctx)
Definition: zerocodec.c:115
AV_CODEC_ID_ZEROCODEC
@ AV_CODEC_ID_ZEROCODEC
Definition: codec_id.h:211
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
ZeroCodecContext
Definition: zerocodec.c:27
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201